package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategoryServiceImpl implements CategoryService {

    @Autowired
    private CategoryMapper categoryMapper;

    @Autowired
    private SetmealMapper setmealMapper;

    @Override
    public PageResult page(CategoryPageQueryDTO categoryPageQueryDTO) {
        // 开启分页组件
        PageHelper.startPage(categoryPageQueryDTO.getPage(), categoryPageQueryDTO.getPageSize());
        Page<Category> p = categoryMapper.page(categoryPageQueryDTO);
        return new PageResult(p.getTotal(), p.getResult());
    }

    @Override
    public void save(CategoryDTO categoryDTO) {


        Category category = new Category();
        // 合并属性
        BeanUtils.copyProperties(categoryDTO, category);

        // 设置属性
        category.setStatus(StatusConstant.DISABLE);

        //category.setCreateTime(LocalDateTime.now());
        //category.setUpdateTime(LocalDateTime.now());
        //category.setCreateUser(BaseContext.getCurrentId());
        //category.setUpdateUser(BaseContext.getCurrentId());

        categoryMapper.insert(category);
    }

    @Override
    public void deleteById(Integer id) {
        // 判断分类下是否有菜品
        Integer count = categoryMapper.countByCategoryId(id);
        System.out.println("count ============ " +  count);
        if (count > 0) {
            // 已有存在
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        // 判断是否有当前分类的套餐
        Integer count1 = setmealMapper.countByCategoryId(id);
        if (count1 > 0) {
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }

        // 删除
        categoryMapper.deleteById(id);
    }

    @Override
    public void update(CategoryDTO categoryDTO) {

        Category category = new Category();

        // 合并属性
        BeanUtils.copyProperties(categoryDTO, category);

        // 设置属性
        //category.setUpdateTime(LocalDateTime.now());
        //category.setUpdateUser(BaseContext.getCurrentId());

        categoryMapper.update(category);
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Category category = Category.builder()
                .id(id)
                .status(status)
                //.updateTime(LocalDateTime.now())
                //.updateUser(BaseContext.getCurrentId())
                .build();
        categoryMapper.update(category);
    }

    @Override
    public List<Category> listByType(Integer type) {
        return categoryMapper.listByType(type, StatusConstant.ENABLE);
    }

}
